/*---------------------------------------------------------------------------------------------------------*/
int32_t main (void)
{
/* Init System, IP clock and multi-function I/O */
SYS_Init();
/* Init UART to 115200-8n1 for print message */
UART_Open(UART0, 115200);
/*
This sample code sets I2C bus clock to 100kHz. Then, Master accesses Slave with Byte Write
and Byte Read operations, and check if the read data is equal to the programmed data.
*/
printf("+-------------------------------------------------------+\n");
printf("| I2C Driver Sample Code(Master) for access Slave |\n");
printf("+-------------------------------------------------------+\n");
/* Init I2C3 */
I2C3_Init();
/* Access Slave with no address mask */
printf("\n");
printf(" == No Mask Address ==\n");
Read_Write_SLAVE(0x15);
Read_Write_SLAVE(0x35);
Read_Write_SLAVE(0x55);
Read_Write_SLAVE(0x75);
printf("SLAVE Address test OK.\n");
/* Access Slave with address mask */
printf("\n");
printf(" == Mask Address ==\n");
Read_Write_SLAVE(0x15 & ~0x01);
Read_Write_SLAVE(0x35 & ~0x04);
Read_Write_SLAVE(0x55 & ~0x01);
Read_Write_SLAVE(0x75 & ~0x04);
printf("SLAVE Address Mask test OK.\n");
while(1);
}
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void)
{
/* Unlock protected registers */
SYS_UnlockReg();
/* Init System, IP clock and multi-function I/O */
SYS_Init();
/* Lock protected registers */
SYS_LockReg();
/* Init UART0 for printf */
UART0_Init();
/*
This sample code sets I2C bus clock to 100kHz. After wake-up, then accesses Slave with Byte
Write and Byte Read operations, and check if the read data is equal to the programmed data.
*/
printf("+------------------------------------------------------------------------+\n");
printf("| M451 I2C Driver Sample Code (Master) for wake-up & access Slave test |\n");
printf("| |\n");
printf("| I2C Master (I2C0) <---> I2C Slave(I2C0) |\n");
printf("+------------------------------------------------------------------------+\n");
printf("Configure I2C0 as a master.\n");
printf("The I/O connection for I2C0:\n");
printf("I2C0_SDA(PA.2), I2C0_SCL(PA.3)\n");
/* Init I2C0 to access Slave */
I2C0_Init();
printf("\n Check I2C slave at power down status.\n");
printf("Press any key to Wake up slave.\n");
getchar();
/* Set the Slave address to wake-up*/
g_u8DeviceAddr = 0x15;
/* I2C function to wake-up slave*/
s_I2C0HandlerFn = (I2C_FUNC)I2C_MasterTxWakeup;
/* Send a START condition to bus */
I2C_SET_CONTROL_REG(I2C0, I2C_CTL_STA);
while(g_u8MstEndFlag == 0);
/*Access to the corresponding address Slave*/
printf("\n\n");
printf("Slave address no mask test.\n");
Read_Write_SLAVE(0x15);
Read_Write_SLAVE(0x35);
Read_Write_SLAVE(0x55);
Read_Write_SLAVE(0x75);
/* Access Slave with address mask */
printf("\n\n");
printf("Slave address mask test.\n");
Read_Write_SLAVE(0x15 & ~0x01);
Read_Write_SLAVE(0x35 & ~0x04);
Read_Write_SLAVE(0x55 & ~0x01);
Read_Write_SLAVE(0x75 & ~0x04);
s_I2C0HandlerFn = NULL;
/* Close I2C0 */
I2C0_Close();
while(1);
}
